Gels

There are three different types of gels: Repulsion Gel, Propulsion Gel and Cleansing Gel.

Repulsion Gel

Repulsion Gel is blue and gives players that walk on it jump boost. Items with the custom name ACV_RepulsionGel will leave Repulsion Gel when they hit the floor. Blue wool is a good item to use for Repulsion Gel:

/summon item ~ ~ ~ {CustomName:"ACV_RepulsionGel",PickupDelay:32767,Item:{Count:1,Damage:11,id:"minecraft:wool"}}

Propulsion Gel

Propulsion Gel is orange and gives players that walk on it speed boost. Items with the custom name ACV_PropulsionGel will leave Propulsion Gel when they hit the floor. Orange wool is a good item to use for Propulsion Gel:

/summon item ~ ~ ~ {CustomName:"ACV_PropulsionGel",PickupDelay:32767,Item:{Count:1,Damage:1,id:"minecraft:wool"}}

Cleansing Gel

Cleansing Gel is used to remove the other gels. Items with the custom name ACV_CleansingGel will remove any other Gel in a small area when they hit the floor. Glass is a good item to use for Cleansing Gel:

/summon item ~ ~ ~ {CustomName:"ACV_CleansingGel",PickupDelay:32767,Item:{Count:1,id:"minecraft:glass"}}